ResearchIn-Press PreviewTherapeutics Open Access | 10.1172/jci.insight.172614
1Généthon, Evry, France
2I-STEM, CECS, I-STEM, AFM, Corbeil-Essone, France
3CECS, I-STEM, AFM, Corbeil-Essone, France
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1Généthon, Evry, France
2I-STEM, CECS, I-STEM, AFM, Corbeil-Essone, France
3CECS, I-STEM, AFM, Corbeil-Essone, France
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1Généthon, Evry, France
2I-STEM, CECS, I-STEM, AFM, Corbeil-Essone, France
3CECS, I-STEM, AFM, Corbeil-Essone, France
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1Généthon, Evry, France
2I-STEM, CECS, I-STEM, AFM, Corbeil-Essone, France
3CECS, I-STEM, AFM, Corbeil-Essone, France
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1Généthon, Evry, France
2I-STEM, CECS, I-STEM, AFM, Corbeil-Essone, France
3CECS, I-STEM, AFM, Corbeil-Essone, France
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1Généthon, Evry, France
2I-STEM, CECS, I-STEM, AFM, Corbeil-Essone, France
3CECS, I-STEM, AFM, Corbeil-Essone, France
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1Généthon, Evry, France
2I-STEM, CECS, I-STEM, AFM, Corbeil-Essone, France
3CECS, I-STEM, AFM, Corbeil-Essone, France
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1Généthon, Evry, France
2I-STEM, CECS, I-STEM, AFM, Corbeil-Essone, France
3CECS, I-STEM, AFM, Corbeil-Essone, France
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1Généthon, Evry, France
2I-STEM, CECS, I-STEM, AFM, Corbeil-Essone, France
3CECS, I-STEM, AFM, Corbeil-Essone, France
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1Généthon, Evry, France
2I-STEM, CECS, I-STEM, AFM, Corbeil-Essone, France
3CECS, I-STEM, AFM, Corbeil-Essone, France
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1Généthon, Evry, France
2I-STEM, CECS, I-STEM, AFM, Corbeil-Essone, France
3CECS, I-STEM, AFM, Corbeil-Essone, France
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1Généthon, Evry, France
2I-STEM, CECS, I-STEM, AFM, Corbeil-Essone, France
3CECS, I-STEM, AFM, Corbeil-Essone, France
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1Généthon, Evry, France
2I-STEM, CECS, I-STEM, AFM, Corbeil-Essone, France
3CECS, I-STEM, AFM, Corbeil-Essone, France
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1Généthon, Evry, France
2I-STEM, CECS, I-STEM, AFM, Corbeil-Essone, France
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1Généthon, Evry, France
2I-STEM, CECS, I-STEM, AFM, Corbeil-Essone, France
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1Généthon, Evry, France
2I-STEM, CECS, I-STEM, AFM, Corbeil-Essone, France
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1Généthon, Evry, France
2I-STEM, CECS, I-STEM, AFM, Corbeil-Essone, France
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2I-STEM, CECS, I-STEM, AFM, Corbeil-Essone, France
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1Généthon, Evry, France
2I-STEM, CECS, I-STEM, AFM, Corbeil-Essone, France
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1Généthon, Evry, France
2I-STEM, CECS, I-STEM, AFM, Corbeil-Essone, France
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1Généthon, Evry, France
2I-STEM, CECS, I-STEM, AFM, Corbeil-Essone, France
3CECS, I-STEM, AFM, Corbeil-Essone, France
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1Généthon, Evry, France
2I-STEM, CECS, I-STEM, AFM, Corbeil-Essone, France
3CECS, I-STEM, AFM, Corbeil-Essone, France
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1Généthon, Evry, France
2I-STEM, CECS, I-STEM, AFM, Corbeil-Essone, France
3CECS, I-STEM, AFM, Corbeil-Essone, France
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1Généthon, Evry, France
2I-STEM, CECS, I-STEM, AFM, Corbeil-Essone, France
3CECS, I-STEM, AFM, Corbeil-Essone, France
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Published May 16, 2024 - More info
Glycogen storage disease type III (GSDIII) is a rare metabolic disorder due to glycogen debranching enzyme (GDE) deficiency. Reduced GDE activity leads to pathological glycogen accumulation responsible for impaired hepatic metabolism and muscle weakness. To date, there is no curative treatment for GSDIII. We previously reported that two distinct dual AAV vectors encoding for GDE were needed to correct liver and muscle in a GSDIII mouse model. Here, we evaluated the efficacy of rapamycin in combination with AAV gene therapy. Simultaneous treatment with rapamycin and a novel dual AAV vector expressing GDE in the liver and muscle resulted in a synergic effect demonstrated at biochemical and functional levels. Transcriptomic analysis confirmed synergy and suggested a putative mechanism based on the correction of lysosomal impairment. In GSDIII mice liver, dual AAV gene therapy combined with rapamycin reduced the impact of the immune response to AAV observed in this disease model. These data provide proof of concept of an approach exploiting the combination of gene therapy and rapamycin to improve efficacy and safety and support clinical translation.